.login {
    height: 100%;
    position: relative;
}
.login-top {
    height: 40%;
    background: url(http://imgin.sfc365.com/yangtze/login.png) no-repeat center / cover;
    background-size: cover;
}
.login-bottom {
    height: 60%;
}
.login-form {
    position: absolute;
    top: 40%;
    left: 50%;
    width: 500px;
    height: 400px;
    margin-top: -200px;
    margin-left: -240px;
    padding: 40px 65px;
    border-radius: 5px;
    background-color: #fff;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.1);
    .login-form-forgot {
        float: right;
    }
    .login-form-button {
        width: 100%;
    }
}
.login-logo {
    margin-bottom: 20px;
}
.xone-slogan {
    position: absolute;
    left: 50%;
    bottom: 20px;
    width: 500px;
    margin-left: -250px;
    line-height: 40px;
    text-align: center;
}